Type-writing machine.



PATENTED JULY 9, 1907.

H. H. STEELE. TYPE WRITING MACHINE.

APPLIOATION FILED SEPT. 14.1mm

INVENTEIR= 1 H! H HHIHII W II N H II VVI'ENESSEE:

H15 T'TUFQN Y UNITED s'rAgEs PATENT. onr on;

HERBERT H. STEELE, OF SYRACUSE, NEW YORK ASSIGN OR TO THE MONAROH TYPEWRITER COMPANY, OF SYRACUSE, NEW YORK, A CORPORATION OF NEW YORK.

TYPE-WRITING MACHINE.

Specification of Letters Patent.

,Patented July 9, 1907.

Application filed September 14, 1905. Serial No. 278,448.

4 To. all whom it mayiconcemi Be it known that I, HERBERT H. STEELE; a citizen of the United States, and a resident of Syracuse, in the Writing Machines, of which the following is a specification.

My invention relates to typewriting machines, and it has for its principal object to provide an improved means for driying the carriages of such machines, more especially when said carriages are of more than the or-.

dinary width. My invention consists in certain features of construction-and combinations and arrangements of parts, all of which will be fully set forth herein and particularly pointed out'in the claims. 1

In the accompanying drawings, Figure 1 is a side elevation of a part of a typewriting machine' Fig. 2 is an enlarged central vertical sectional view of the carriage driving mechanism. Fig. 3 is a detail view of a portion of the mechanism to be hereinafter described. My invention is applicable to typewriting machines generally, .but for the sake of illustration I have here shown it applied to. a Monarch typewriter. The carderived from a coiled spring 6, the inner end of which is secured by a screw 7 to an enlarged portion 8 of an adjusting shaft 9 that is mounted in a bracket depending from the top plate 5 and having a rear arm 10 and a front'arm 11. The spring 6 stands back of said rear arm 10 and has its outer end secured by a screw 12 to a casing 13 having an elongated hub or sleeve 14 surrounding the shaft 9 and extending toward the front of the machine. The sleeve or hub 14 extends through an axial opening in a firicd bevel gear 15, the hub of which is seated in a suitable opening in the bracket arm 10, where it is rigidly secured by a set screw 16 threadedthrough said bracket arm and engaging said hub. The sleoye 14 may be saidto be journaled in the bevel-goon 15 and its hub and journaled on the shaft 9. On the forward end of thesleeve 14 a collarl'i' is rigidly cured by a screw 18 passing through said collar and into said sleeve. Said collar 17 has projecting radially therefrom a stud 19, on which is journaled a planetary bevel gear 20 that meshes with the fixed bevel gear 15. The bevel gear 20 held in position onthe stud 19 by a collar 21 mounted on the end of said stud and secured in position by a pin 22 passing through holes 23 in said collar and stud. The 'planetary bevel gear 20 meshes with a rotatable bevel gear 24, the elongated hub 25 of which surrounds the shaft 9 and projects through a suitable opening in the bracket arm 11 in which it is journaled. On the forwardly projecting end of the hub 25, a carriage driving wheel 26 is mounted and rigidly secured by a pin 27 passing through the hub of said carriage driving or tape wheel and into said sleeve. The forward face of the spring casing 13 bears against the arm 10. oi the rear end of the hub of thefixed gear-15, and the shoulder formed on the shaft 9 by the enlargement 8, bears against said casing 13, so that axial ino-v tion of these parts toward the front of the machine is preventedm The forward end of the sleeve 14 also bears against the bevel gear 24, which 'in turn bears: against the bracket arm 11. Axial motion of the parts toward the rear of the machine is prevented by the hub of the carriage driving wheel 26 bearing against the bracket arm 11, and by the head of a screw .28 which is threaded into the forward end of the shaft 9 and engages the hub 25 of the bevel gear 24. V

The usual ratchet wheel 29 is mounted on the shaft 9 just back of the enlargement 8, and is clamped between said enlargement and a nut 30 threaded onto said shaft 9. The usual alarm bell 31 is rigidly secured on the rear end of the shaft 9 by a nut 32, and said bell is formed with a knurled edge 33 for convenience in turning it together with the shaft 9. The usual double retaining pawl (not shown) co-operatcs withthe ratchet wheel '29.

The carriage driving wheel 26 is, in the present instance, a tape wheel which projects slightly above the top plate 5, as usual, and has secured thereto one end of tape wheel 26 will, of course, be replaced with a gear wheel. i

The machine may be equipped with any suitable dcviccs for controlling the motion of the carriage. I have here shown an cscapcmeut mechanism similar to that ordinarily employed in the Monarch machine. A

feed rack 37 is mounted on arms 38 that are pivoted to the carriage at 39. Said feed rack meshes with a pinion 40 that is mounted on ashafl join-nailed in a housing 41 and carrying at its rear end an cscapcmcnt whcol -42, 0-. \'Vll 1('ll lS controlled by feed dogs 43 mounted on the I upwardly extending arm 14 of a dog rocker which is pivotcd at 45 in'a bracket-4G depending from the top plate 5. Said dog rocker has a forwardly extending arm 47 that is connected by a link 48 with a universal bar (not shown that. is controlled in the usual manner by the character keys and space key of the machine. The arm 44 is-norinally held in its rear position by a returnrlage, a spring drum, a carriage driving wheel, a band,

ing'spring 49 that is compressed'between the arm 44 and bracket 46. p

In operation the spring 6 is placed under any desired degree of tension by turning the adjusting shaft 9 by means of the bell 3-1. When the escapelnent mechanism is operated by the character keys or the space key, the spring drum 13 turns toward the left, turning the collar 17 toward the left about the shaft 9. The planetary gear 20 meshing as it does with the stationary gear 15, imparts to the rotary gear 24 and the tape wheel 26 a left-hand rotary motion double that of the case 13-. It will thus beperceived that with the same length of spring 6 and with the same diameter of tape wheel 26' the carriage may be fed double the distance that it would be if said tape wheel were connected'directly' with the spring drum. In other words, I have provided a multiplying gear between the spring drum and the.

tape wheel. It will be observed that the spring drum and the tape wheel rotate in the same direction, namely toward the left, and that in, order to tighten the spring 6 the bell 3] will also be turned toward the left. This is an advantage because the operators of these machines have long been accustomed to turn this adjusting device in this direction to tighten the spring. It will also-be perceived that the spring drum, the multiplying' gear and the tape wheel are all co-axial, being all' arranged along theshaft 9, as has been usual in the simpier forms of carriage driving devices heretofore used.

This is also advantageous because it enables me to place my drivinggear with its speed multiple feature in the same place in the machine, as has heretofore been occupied by the ordinary driving mechanism, so that the insertion of this mechanism does not disturb the arrangerings; a shaft, a driving wheel on 'said'shaft and conmeht oi the parts of existing machines. My carriage driving mechanism may be placed in the Monarch machine or inother'standardmachines without in any manner changing the gencral design of said machines. It will also be observed that the driving mechanism is complete in itself, being all mounted in the bracket 10', 11, which may be securedto the top plate'5 after, the

parts have been assembled. It will, of course, be un' What I claim as new and desire to secure byLetters Patent,. is: V l g I 1. In a typewriting machine, the combination of a carriage, a spring drum,- a carriage driving wheel, a band connecting said driving wheel with the"carriage and ar ringed to draw saldcarrlage in letter-space direction, and means for communicating motion from the said spring drum to the carrlage driving wlleel and imparting to said wheel an angular velocity greater than that of said spring drum, the construction and arrangement being such that the carriage is drawn a greater distance at each turn of the spring drum than it would if said driving wheel were connectcddlrectly to said spring drum.

2. In a typewrlting machine, the combination of a carspring drum and in the same direction as said spring drum, the construction and arrangement being such that the carriage is drawn a greater distance at each turn of the spring drum than it would if said driving Wheel were connected directly to said spring drum.

3. Ina typewriting machine, the combination of a car rings, a driving wheel connected with said carriage, a spring. drum and a planetary multiplying gear operatively connected with said driving wheel and spring drum for communicating motion from the spring drum to said driving wheel the motion of the driving wheel being at a greater angular velocity than said spring drum.

4.: In a typewriting machine, the combination of a'carriag'e, a shift, a spring drum on said shaft, a carriage driving wheel on said shaft, a gear that turns on said shaft and is connectedwith said driving wheel, a fixed gear, and a planetary gear carried by said shaft and which co operates with said flied gear and with the gear on the driving wheel, whereby motion is communicated from the spring drum to the driving wheel through said intermediate gears and the angular velocity of the driving wheel is greater than that of said spring drum.

5. In a typewriting machine, the combination of a carriage, a shaft, 21 spring-on said shaft, a carriage, driving wheel on said shaft; and means on said shaft for comdriving wheel, and imparting to said wheel an angular velocity greater than that of the part. to which said spring is immediately connected.

rings, a spring drum, a carriage driving wheel co-axial with said spring drum, and a multiplying gear connecting said spring drum with said driving wheel and adapted to ,turn said driving wheel in the same dlrection' as said spring drum.

7. In-a typewritingmachine, the combination'pf a carnectedto said carriage; a springdrum'on said shaft, and is eating the motion of said spring to said driving wheel.

riage, a spring drum for driving said carriage, and connections between said spring drum and carriage including a planetary multiplying gear co-axlal with said spring 3drum.

i 9. In atypewriting machine, the combination of a, carriage, a driving wheel connected with said carriage, a bevel gear connected with said carriage driving wheel, a fixed bvel gear, a'planetary bevel gear engaging both of the first mentioned bevel gears, and a spring drum connected with said planetary bevel gear.

10.. In a typewriting machine, the combinationof a carriage, an adjusting shaft, :1 spring having one'end connected with said adjusting shaft, a casing having a sleeve gen-r mounted on said sleeve or hub, a fixed gearand a ro tatable gear engaged by said planetary gear, said rotatable gear being journaled on said adjusting shaft, and means whereby said rotatable gear drives said carriage.

11. In a typewriting machine, the combination of a carriage, a spring drum, :1 driving wheel co-axial with said spring-drum, a band connecting said driving wheel with ;the carriage, and a r'nultiplying gear connecting said HERBERT n. STEELE.

Witnesses:

JOHN S. MITCHELL,

H. A. Autism.

6. In a typew'rlting machine, the combination of a car- I planetary multiplying gear onsaid shaft -for communispring drum with saiddriving wheel and adapted to turn municating motion" from said spring to said carriage '8. In a typewriting machine, the combination of a caror hub journaled on said adjusting shaft and having the other end of said spring connected thereto, a planetary 

